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CN-121989188-A - Electric hammer control method and electric hammer control circuit

CN121989188ACN 121989188 ACN121989188 ACN 121989188ACN-121989188-A

Abstract

The invention relates to an electric hammer control method and an electric hammer control circuit, which are used for monitoring the vibration amplitude of an electric hammer body in the working process of the electric hammer, presetting a vibration amplitude threshold value, representing ordinary working intensity when the vibration amplitude of the electric hammer body is lower than the threshold value, representing special working intensity when the vibration amplitude of the electric hammer body is equal to or higher than the threshold value, controlling a driving motor to operate at a stable rotating speed by a controller of the electric hammer in the ordinary working intensity state, and controlling the driving motor to operate at a high-speed period and a low-speed period and a high-speed period in the special working intensity state. The invention can solve the technical problem that the vibration recoil effect of the current electric hammer causes harm to the personal health of a user.

Inventors

  • LU YAZHOU
  • WEI YE

Assignees

  • 张家港华捷电子有限公司

Dates

Publication Date
20260508
Application Date
20251223

Claims (5)

  1. 1. The electric hammer control method is characterized in that the vibration amplitude of an electric hammer body is monitored in the working process of the electric hammer, a vibration amplitude threshold value is preset, the common working intensity is represented when the vibration amplitude of the electric hammer body is lower than the threshold value, and the special working intensity is represented when the vibration amplitude of the electric hammer body is equal to or higher than the threshold value; in the state of ordinary working intensity, the controller of the electric hammer controls the driving motor to run at a stable rotating speed; In a special working intensity state, the controller of the electric hammer controls the driving motor to operate in a variable speed mode at a high speed period and a low speed period, and the low speed conversion period and the high speed conversion period are one stroke of the hammer head of the electric hammer.
  2. 2. The electric hammer control method according to claim 1, wherein the periodic variable speed operation is a low speed, and a high speed periodic variable speed operation is performed at 0.75 times the steady rotational speed, and at 1.5 times the steady rotational speed.
  3. 3. The electric hammer control method according to claim 1, wherein the vibration amplitude of the electric hammer body is detected by an acceleration sensor, and a larger maximum acceleration value detected by the acceleration sensor represents a larger vibration amplitude of the electric hammer body.
  4. 4. The electric hammer control method according to claim 1, wherein the vibration amplitude threshold value is set and adjustable according to a user's demand.
  5. 5. An electric hammer control circuit for implementing the electric hammer control method according to any one of the claims 1-4, and is characterized by comprising a power management module (1), a singlechip (2) and an amplitude monitoring module (3), wherein the input end of the power management module (1) is connected with mains supply, the output end of the power management module is connected with the singlechip (2), the amplitude monitoring module (3) is connected with the singlechip (2), the electric hammer control circuit further comprises an alternating current-direct current conversion module (4), the input end of the alternating current-direct current conversion module (4) is connected with the mains supply, the output end of the alternating current-direct current conversion module is connected with the motor anode of an electric hammer through a medium-voltage MOS tube (5), one output pin of the singlechip (2) is connected with the grid electrode of the medium-voltage MOS tube (5) through a low-voltage MOS tube (6), and the amplitude monitoring module (3) is used for monitoring the acceleration of an electric hammer body along the axial direction of the hammer.

Description

Electric hammer control method and electric hammer control circuit Technical Field The invention belongs to the technical field of electric tool control, and particularly relates to an electric hammer control method and an electric hammer control circuit. Background The electric hammer is widely applied in the fields of building drilling and breaking and dismantling, has the characteristics of large self weight and large impact, has higher requirement on arm strength of a user, and has relatively high effort and larger potential safety hazard when being used by common users. Particularly, when hammering is performed on a high-strength hammering target, the recoil amplitude and recoil force of the electric hammer body are extremely large, so that the electric hammer body can cause large impact on the arm of a user, and occupational diseases such as vibration diseases, joint and musculoskeletal injuries and the like can be easily caused after long-term use. Therefore, how to improve the use safety of the user is an important direction of development of the electric hammer, and the currently commonly used technical scheme is to set a buffer device on the electric hammer body, the handle and other parts, but in order to ensure that the hammer head of the electric hammer has enough pressure on the target object, the buffer effect set by the buffer device is often very limited and is boring rather than nothing. Disclosure of Invention The invention aims to solve the technical problems of harm to the human health of a user caused by the vibration recoil action of the conventional electric hammer. In order to solve the technical problems, the technical scheme adopted by the invention is that the electric hammer control method is characterized in that the vibration amplitude of an electric hammer body is monitored in the working process of the electric hammer, a vibration amplitude threshold value is preset, the ordinary working intensity is represented when the vibration amplitude of the electric hammer body is lower than the threshold value, and the special working intensity is represented when the vibration amplitude of the electric hammer body is equal to or higher than the threshold value; in the state of ordinary working intensity, the controller of the electric hammer controls the driving motor to run at a stable rotating speed; In a special working intensity state, the controller of the electric hammer controls the driving motor to operate in a variable speed mode at a high speed period and a low speed period, and the low speed conversion period and the high speed conversion period are one stroke of the hammer head of the electric hammer. As a preferable mode, the periodic variable speed operation is a high-speed periodic variable speed operation in which 0.75 times the steady rotational speed is a low speed and 1.5 times the steady rotational speed is a high speed. As a preferable scheme, an acceleration sensor is adopted to detect the vibration amplitude of the electric hammer body, and the larger the highest acceleration value detected by the acceleration sensor is, the larger the vibration amplitude of the electric hammer body is. As a preferred solution, the vibration amplitude threshold is set and adjustable according to the user's needs. The invention further aims to solve the technical problems of providing an electric hammer control circuit and solving the technical problems that the vibration recoil effect causes harm to the human health of a user when the electric hammer is used at present In order to solve the technical problems, the technical scheme is that the electric hammer control circuit is used for implementing the electric hammer control method and comprises a power management module, a singlechip and an amplitude monitoring module, wherein the input end of the power management module is connected with mains supply, the output end of the power management module is connected with the singlechip, the amplitude monitoring module is connected with the singlechip, the electric hammer control circuit further comprises an alternating current-direct current conversion module, the input end of the alternating current-direct current conversion module is connected with the mains supply, the output end of the alternating current-direct current conversion module is connected with the motor anode of the electric hammer through a medium voltage MOS tube, one output pin of the singlechip is connected with the grid electrode of the medium voltage MOS tube through a low voltage MOS tube, and the amplitude monitoring module is used for monitoring the acceleration of an electric hammer body along the axial direction of a hammer head. The invention has the beneficial effects that the vibration amplitude of the electric hammer body is detected by utilizing the acceleration sensor, and the vibration amplitude of the electric hammer body is adjusted when the limit range is exceeded by controlling the driving mot